It’s not designed for level flight, it’s designed to keep the aircraft flying. It will put you in a descent, and into a safe place to get yourself into the QRH and find the QRH pitch and power setting for your phase of flight.
A more interesting one to think about is a take off from a performance limited field, high flap setting, at MTOW with airspeed disagree at V1, I don’t know many who’ll rush to set 10/80 until well clear of the ground.